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Don, using an agitated saline solution with ultasound to find out if you
are at risk is strongly avoided by the tec agencies - they prefer to
come up with bullshit excuses for bends which DAN supports for injuries
and deny the PFO as a cause. PFO talk is bad for business, now you are a
bad guy with the dive training agencies.

Please, no more common sense information, we deal in bullshit and Tai
Chi breathing only here.

Why would I go get PFO tested when wheelchairs are so cheap? 

Besides, that is money I could have spent taking one more "deep air "
class, or could have spent on a nice pair of double bondage wings.

I can see you are going to be a real problem. The last thing we need
here is somebody who does not want to get killed or crippled diving. 

Don W. wrote:
> 
> Greetings to everyone on the techdiver email list.
> 
> After over a year of silently lurking its probably time to introduce
> myself to the list.
> 
> My name is Don, and I live in Austin Texas.  I'm a 41 year
> old electrical engineer who makes a living designing integrated
> circuits.
> My wife is a EE who designs PowerPC microprocessors for Motorola.
> 
> I started diving in 1991 and have logged slightly less than 100 dives in
> the past 8 years.  My first introduction to scuba was CMAS, but I got
> recert'd by PADI so that I could convince my wife to get certified.  Two
> years
> ago we did the AOW and rec Nitrox certs through PADI and TDI.
> 
> Oh yeah, and for you tri-atheletes, we run 2-3 miles three times a
> week.  Not
> quite 5 miles/day, but we're not couch potatoes either.
> 
> We've got scubapro gear (MK20/G500 mains, R190 & Air2 spares) with
> standard
> scubapro BC's set up for singles.  I occasionally solo dive, so I've got
> a
> 30 cf pony which I mount upside down off of my main as a redundent
> supply
> (for solo dives only... otherwise the extra weight is not worth the
> bother).
> This gear was all purchased before I subscribed to this list.
> 
> BTW, I used to design military avionics for Boeing, so I have some
> experience
> in assessing failure points and adding redundency to increase system
> reliability.  Oh yeah, and I spent ~two years designing ultrasound
> machines for
> Siemens so I know a little about doppler echocardiography and bubble
> studies.
> 
> ------------------------------------------------------------------------------
> The above is all for the archive records, so that when you call me a
> "sorry-assed
> college boy puke stroke who's dumber than shit and farm animal stupid"
> you can
> add in some of the relevant details :-)
> ------------------------------------------------------------------------------
> 
> Now my first piece of (hopefully) useful information:  Everyone on this
> list
> probably knows that a Patent Foramen Ovule (PFO) is a small hole in the
> muscle
> walls between the chambers in your heart and that its bad for technical
> diving
> because it lets bubbles which normally form in your veins flow through
> into
> your arteries without passing through your lungs (where they would be
> expelled).
> 
> You probably also know that bubbles in your arteries are a bad thing
> because while
> the veins start out really small (at the body tissues) and get bigger
> and bigger
> as they get closer to your heart, the arteries are big at the heart, and
> get
> smaller and smaller as they go to the body tissues.  The bubbles can
> block off a
> small arterial branch and oxygen starve all of the organs etc that are
> fed off of
> that branch.
> 
> You probably know that approximately 30% of people have a PFO and are
> consequently predisposed to a bends hit.
> 
> <tidbit of useful information starts here>  You can find out for sure
> whether
> you have a PFO by having tiny bubbles in saline solution injected into
> one of
> your veins while watching your heart in real-time on ultrasound.  The
> bubbles
> show up clearly on the images, and if any of them cross the muscle
> there's a
> hole.  You should be under some kind of muscle strain at the time to
> make sure
> that you don't have the kind of PFO that is normally closed, but opens
> under
> strain.  (If you don't have an ultrasound machine and syringe in your
> garage, a
> good cardiologist can assist you for the price of two new MK20/G500's)
> 
> Did everyone already know this?
> 
> Thanks in advance for your feedback on any or all of the above, however
> if you
> just call me stupid without providing any helpful information you
> can.......
> ........... Uh, .........stroke me.
> 
> Later,
> 
> Don W.
> --
> Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'.
> Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.


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